Overview

overview

10

Static

static

5a3ac08cf1...94.exe

windows7-x64

10

5a3ac08cf1...94.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    5a3ac08cf1bdee0dfe30bcd306c5613a7526eda1a1eaec00d76f3681b25f8694

  • Size

    152KB

  • Sample

    220802-exb5lsbgdr

  • MD5

    8e43bfd8ae22ff54542cdef5356f661a

  • SHA1

    0254724e7eeed2a6a93ad34fa98088435727787f

  • SHA256

    5a3ac08cf1bdee0dfe30bcd306c5613a7526eda1a1eaec00d76f3681b25f8694

  • SHA512

    3605db8d6d139cdc05e872ca90347bf4d2bfeb7420fbfda4d92dbc082724c4b2b02a0a19cad7164f9cd3709b6fd8cb7f9833ed8b2ff45606cc3b81046fc110d7

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      5a3ac08cf1bdee0dfe30bcd306c5613a7526eda1a1eaec00d76f3681b25f8694

    • Size

      152KB

    • MD5

      8e43bfd8ae22ff54542cdef5356f661a

    • SHA1

      0254724e7eeed2a6a93ad34fa98088435727787f

    • SHA256

      5a3ac08cf1bdee0dfe30bcd306c5613a7526eda1a1eaec00d76f3681b25f8694

    • SHA512

      3605db8d6d139cdc05e872ca90347bf4d2bfeb7420fbfda4d92dbc082724c4b2b02a0a19cad7164f9cd3709b6fd8cb7f9833ed8b2ff45606cc3b81046fc110d7

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistence

    • Executes dropped EXE

    • Modifies Windows Firewall

      evasion

    • Sets service image path in registry

      persistence

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks